Home / 206,321.20-309,301.80-80,047.60

Finding the Fourth Proportional to 206,321.20, 309,301.80 and 80,047.60

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Solution

The fourth proportional to 206,321.20, 309,301.80 and 80,047.60 is: 120,001.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,321.20 : 309,301.80 = 80,047.60 : x
  2. Step 2: Convert to fraction form
    206,321.20/309,301.80 = 80,047.60/x
  3. Step 3: Cross multiply
    206,321.20x = 309,301.80 × 80,047.60
  4. Step 4: Simplify right side
    206,321.20x = 24,758,866,765.68
  5. Step 5: Solve for x
    x = 24,758,866,765.68/206,321.20
  6. Step 6: Final answer
    x = 120,001.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.